Rotary bobbin holder



Sept. 27, 1960 f Y. sEKELLA ROTARY BOBBIN HOLDER Filed June 13, 1958 United sees o {commanditaire-z Youston SekelIa,-.El`mra;,',,N4Yiassgiirio The Bendix Corporation, a corporation of ,Delaware Filed June 13, "195s, rsel-11ste.741,874V`v 4 Claims. (c1. 24a-130.2)

openings. IIt is another object to provide such a device which is simple and economical in construction, and eicient and durable in operation.

Further objects and advantages will be apparent from the following description taken in connection with the accompanying drawing in which:

Fig. 1 is a vertical substantially mid-sectional view of a preferred embodiment of the invention showing the parts in normal position prior to the attachment of the bobbin;

Fig. 2 is a similar view showing the positions of the parts when the bobbin is mounted on the holder;

Fig. 3 is a detail of the clutch member used to prevent rotation of the bobbin holder during the latching and unlatching operation of the device; and

Fig. 4 is a detail of a modied form of clutching arrangement.

In Fig. 1 of the drawing there is illustrated a generally cylindrical tubular body 1 adapted to enter loosely in the upper end of a bobbin, a portion of which is illustrated at 2. The upper end of body 1 is constricted as shown at 3 in order to form a seat for a bearing cup- 4 in which a plurality of bearing balls 5 are seated. A supporting bolt 6 is retained in an opening in a creel board 7 by means of a Sleeve nut 8 and at its lower end is formed with a spherical bearing surface 9 cooperating with the balls 5 to form a swivel bearing for the bobbin holder with allowance for some universal movement.

The supporting bolt 6 is formed with a shoulder 10, and a stationary toothed clutch member 11 is firmly clamped between said shoulder and a spring thrust washer 12 threaded on the supporting bolt below the creel board 7. A bar brake member 13 such as shown in the patent to Mann 2,109,543 issued March 1, 1938, is preferably interposed between the thrust washer and the clutch member 11. The upper end of the body 1 is formed with teeth 14 adapted to cooperate with the teeth of clutch member 11 and prevent rotation of the bobbin holder when it is raised to cause engagement of said teeth.

A tapered centering collar 15 is slidably mounted on the body 1 of the bobbin holder and has a pin 16 ixedly mounted at its ends therein and diametrically traversing the body 1 through a pair of axially extending slots 17 in said body. The upper ends of the slots 17 are curved laterally to form seats 18 receiving pin 16 when the collar 15 and pin 16 are rotated slightly while held in their upper positions. A spring 19 is located in the body 1 bearing at its lower end on the pin 16 and at its upper end bearing against a dished washer 21 which is seated against the bearing cup 4.

Patented Sept. 27, u1.96ct

' 'Acurved 'latch member 22 is "pivoted 'at itsk upperend Von. the pin 16 .and is provided with an arcuate slot 23 ^=slidbly engaging a pin 24j`'Xe'd in any suitable manner "inithe body 1"'of'the'bobbinfholden The latch is formed atits lower end with ,ao-curved extension l25 which is E rangd toi'project tlibugh'a' slot 26 in lthe r'body of th Vbobbin holdera'nd `tl'rerely'engage an' internal shoull'dr 27 inthe bobb'rrasishowri 'in'Figp 2. "The curvature of the slot 23 in the latch 22 is such that when the "latch is raised by the upward movement of the pin 16 on which it is pivoted, the stationary pin 24 causes the latch to swing outwardly into its operative position.

In the operation of the device, starting with the parts in the positions illustrated in Fig. l, in order to mount a bobbin 2 on the holder it is pushed up on said body, until it engages the collar 15 and then thrust upwardly against the force of the spring 19 until the Acollar moves the pin 16 to the upper end of the slots 17. Further upward movement of the bobbin and collar then raises the body 1 of the bobbin holder until the teeth 14 on the upper end of the bobbin holder are firmly pressed against the teeth of the stationary clutch member 11, thereby preventing rotation of the bobbin holder. The bobbin 2 is then rotated slightly to bring the pin 16 into the seats 18 at the upper ends of the slots 17 so that when the bobbin is released by the operator, the collar 15 and pin 16 are held in their upper positions as shown in Fig. 2.

As previously indicated, the upward movement of the pin 16 causes the latch 22 to swing outwardly through the slot 26 whereby thc projecting portion 25 of the latch engages the shoulder 27 in the interior of the bobbin and holds the bobbin securely.

When it is desired to remove the bobbin it is merely necessary to again thrust it upwardly to raise the pin 16 out of the seats 18 and close the clutch 14, 11. A slight reverse twist of the bobbin then rotates the collar 15 and pin 16 to bring said pin into alinement with the slots 17 in the body of the bobbin holder whereupon the collar 1S, pin 16 andA latch 22 are permitted to return to their idle positions, releasing the bobbin.

The friction between the upper end ofthe bobbin 2 and the tapered portion of the collar 15 will be found normally adequate to insure rotation of the collar with the bobbin during the locking and unlocking operation of the latch. If desired, however, the tapered portion of the collar may be knurled or toothed, in order to increase the coefficient of coupling between said members.

In Fig. 4 of the drawing there is illustrated a modied form of clutching arrangement for the body of the bobbin holder. As there shown, the clutch member 11 is omitted. lClutch teeth 31 are formed directly on the supporting bolt 36 to cooperate with similar teeth 34 on the end of the body member when the latter is raised as above described. This arrangement has the advantage that less upward pressure is required to prevent rotation of the bobbin holder body than might be required in the iirst embodiment of the invention.

Although certain structure has been shown and described in detail it will be understood that changes can be made in the form and arrangements of the parts without departing from the spirit of the invention.

I claim:

1. In a pendulous bobbin holder a tubular body adapted to enter a hollow bobbin, bearing means for rotatably supporting said body, a collar slidably mounted on said body, a pin in said collar traversing the body, said body having axial slots in which said pin is slidable, the upper ends of said slots having curved portions which are olfset laterally and downwardly to provide seats for the pin, a latch member in the body pendulously supported on the pin and having an inclined slot, a second pin fixed in the body traversing said inclined slot, said body having body.

an axial slot adjacent the latch the slot in the latch being so formed that when the latch is raised by the collar to its upper position with its supporting pin in said seats, the lower end of the latch projects through the adjacent slot in the 4body to forma support fora bobbin on said further a clutch means operative by raising the body of the holder from its bearing toresist rotation of said 4. A bobbin holder-as set forth-in claim 1, including further a stationary toothed clutch member spaced slightly above the body of the holder, the upper end of said body being provided with clutch teeth engageable with the teeth of said xed clutch member by upward movement of said body.

References Cited in the file ofY this patent UNITED STATES PATENTS 2,836,376,v Winslow May 27, 1958 

